'Suburb' definitions:

Definition of 'suburb'

noun

A residential district located on the outskirts of a city [syn: suburb, suburbia, suburban area]

From: GCIDE

Suburb \Sub"urb\, n. [L. suburbium; sub under, below, near + urbs a city. See Urban.]
1. An outlying part of a city or town; a smaller place immediately adjacent to a city; in the plural, the region which is on the confines of any city or large town; as, a house stands in the suburbs; a garden situated in the suburbs of Paris. "In the suburbs of a town." --Chaucer. [1913 Webster]
[London] could hardly have contained less than thirty or forty thousand souls within its walls; and the suburbs were very populous. --Hallam. [1913 Webster]
2. Hence, the confines; the outer part; the environment. "The suburbs . . . of sorrow." --Jer. Taylor. [1913 Webster]
The suburb of their straw-built citadel. --Milton. [1913 Webster]
Suburb roister, a rowdy; a loafer. [Obs.] --Milton. [1913 Webster]